Memetailing 

Adding an obvious and uninspired meme to another person's joke or post, thereby riding on the coattails of their humor/insight/story for upvotes, likes, etc, without making a genuine contribution.

When that redditor added an "Everyone liked that" meme to a feel-good post about a loyal dog, he was just memetailing and won't get an upvote from me

Memetailing by Alianym October 28, 2020

Memetising 

The act of advertising businesses or products with the use of memes.

Vicky: “I can’t believe how busy this restaurant is!”

Daniel: “Yeah they’ve been heavily memetising on Facebook.”

Memetising by sirdanielot July 26, 2018

memailing

emailing yourself

hey look at john there, having a great time, memailing, man that guy loves his own chat!

memailing by cats mababes March 23, 2010